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Image source: www.flickr.com/photos/tonyzech

I've never seen how such a wind power station is assembled...

Behind this photo is the company Bäumer...represented by the red crane. The boom is a five section full power boom with a maximum tip height of 40.0 m.

Here some more details:

»»» http://www.baeumer.com/pdf/grove-gmk-3050-1.pdf


Image source: www.manitowoccranes.com

For comparison: LTM 11200-9.1 with 9 axes and a maximum load capacity of 1200 t is the most powerful telescopic crane with the longest telescopic boom - Max. lifting height 170 m - max. protuberance 126 m ...

Here's a list of other interesting cranes:

»»» http://www.neeb-krane.de/



Image source: www.neeb-krane.de

Quite impressive, isn't it?

What is a dragline excavator?

Dragline excavation systems are heavy equipment used in civil engineering and surface mining. In civil engineering the smaller types are used for road and port construction. The larger types are used in strip-mining operations to move overburden above coal, and for tar-sand mining. Draglines are amongst the largest mobile equipment (not water-borne), and weigh in the vicinity of 2000 metric tonnes, though specimens weighing up to 13,000 metric tonnes have also been constructed.

A dragline bucket system consists of a large bucket which is suspended from a boom (a large truss-like structure) with wire ropes. The bucket is manoeuvred by means of a number of ropes and chains. The hoist rope, powered by large diesel or electric motors, supports the bucket and hoist-coupler assembly from the boom. The dragrope is used to draw the bucket assembly horizontally. By skillful manoeuvre of the hoist and the dragropes the bucket is controlled for various operations.

»»» Source: wikipedia.org/wiki/Dragline_excavator

What is this?

Plowing snow (picture: Wikimedia)

The range of performance of the .... is from 50 to 90 kW for an operating weight between 7.0 and 12.0 t. The loader on the front can take up between 0.8 and 1.5 m³, the backhoe up to 0.5 m³. The lifting height varies from 2.70 to 2.80 m. The boom has a range of up to 6.5 m.

»»» Source and answer